Merge branch 'stable/xen-pcifront-0.8.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

  and branch 'for-linus' of git://xenbits.xen.org/people/sstabellini/linux-pvhvm

* 'for-linus' of git://xenbits.xen.org/people/sstabellini/linux-pvhvm:
  xen: register xen pci notifier
  xen: initialize cpu masks for pv guests in xen_smp_init
  xen: add a missing #include to arch/x86/pci/xen.c
  xen: mask the MTRR feature from the cpuid
  xen: make hvc_xen console work for dom0.
  xen: add the direct mapping area for ISA bus access
  xen: Initialize xenbus for dom0.
  xen: use vcpu_ops to setup cpu masks
  xen: map a dummy page for local apic and ioapic in xen_set_fixmap
  xen: remap MSIs into pirqs when running as initial domain
  xen: remap GSIs as pirqs when running as initial domain
  xen: introduce XEN_DOM0 as a silent option
  xen: map MSIs into pirqs
  xen: support GSI -> pirq remapping in PV on HVM guests
  xen: add xen hvm acpi_register_gsi variant
  acpi: use indirect call to register gsi in different modes
  xen: implement xen_hvm_register_pirq
  xen: get the maximum number of pirqs from xen
  xen: support pirq != irq

* 'stable/xen-pcifront-0.8.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: (27 commits)
  X86/PCI: Remove the dependency on isapnp_disable.
  xen: Update Makefile with CONFIG_BLOCK dependency for biomerge.c
  MAINTAINERS: Add myself to the Xen Hypervisor Interface and remove Chris Wright.
  x86: xen: Sanitse irq handling (part two)
  swiotlb-xen: On x86-32 builts, select SWIOTLB instead of depending on it.
  MAINTAINERS: Add myself for Xen PCI and Xen SWIOTLB maintainer.
  xen/pci: Request ACS when Xen-SWIOTLB is activated.
  xen-pcifront: Xen PCI frontend driver.
  xenbus: prevent warnings on unhandled enumeration values
  xenbus: Xen paravirtualised PCI hotplug support.
  xen/x86/PCI: Add support for the Xen PCI subsystem
  x86: Introduce x86_msi_ops
  msi: Introduce default_[teardown|setup]_msi_irqs with fallback.
  x86/PCI: Export pci_walk_bus function.
  x86/PCI: make sure _PAGE_IOMAP it set on pci mappings
  x86/PCI: Clean up pci_cache_line_size
  xen: fix shared irq device passthrough
  xen: Provide a variant of xen_poll_irq with timeout.
  xen: Find an unbound irq number in reverse order (high to low).
  xen: statically initialize cpu_evtchn_mask_p
  ...

Fix up trivial conflicts in drivers/pci/Makefile

4 files changed, 189 insertions, 1 deletions

diff --git a/include/xen/interface/features.h b/include/xen/interface/features.h
index 70d2563ab166..b6ca39a069d8 100644
--- a/include/xen/interface/features.h
+++ b/include/xen/interface/features.h
@@ -47,6 +47,9 @@
 /* x86: pvclock algorithm is safe to use on HVM */
 #define XENFEAT_hvm_safe_pvclock           9
 
+/* x86: pirq can be used by HVM guests */
+#define XENFEAT_hvm_pirqs           10
+
 #define XENFEAT_NR_SUBMAPS 1
 
 #endif /* __XEN_PUBLIC_FEATURES_H__ */
diff --git a/include/xen/interface/io/pciif.h b/include/xen/interface/io/pciif.h
new file mode 100644
index 000000000000..d9922ae36eb5
--- /dev/null
+++ b/include/xen/interface/io/pciif.h
@@ -0,0 +1,112 @@
+/*
+ * PCI Backend/Frontend Common Data Structures & Macros
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ *   Author: Ryan Wilson <hap9@epoch.ncsc.mil>
+ */
+#ifndef __XEN_PCI_COMMON_H__
+#define __XEN_PCI_COMMON_H__
+
+/* Be sure to bump this number if you change this file */
+#define XEN_PCI_MAGIC "7"
+
+/* xen_pci_sharedinfo flags */
+#define _XEN_PCIF_active                (0)
+#define XEN_PCIF_active                 (1<<_XEN_PCIF_active)
+#define _XEN_PCIB_AERHANDLER            (1)
+#define XEN_PCIB_AERHANDLER             (1<<_XEN_PCIB_AERHANDLER)
+#define _XEN_PCIB_active                (2)
+#define XEN_PCIB_active                 (1<<_XEN_PCIB_active)
+
+/* xen_pci_op commands */
+#define XEN_PCI_OP_conf_read            (0)
+#define XEN_PCI_OP_conf_write           (1)
+#define XEN_PCI_OP_enable_msi           (2)
+#define XEN_PCI_OP_disable_msi          (3)
+#define XEN_PCI_OP_enable_msix          (4)
+#define XEN_PCI_OP_disable_msix         (5)
+#define XEN_PCI_OP_aer_detected         (6)
+#define XEN_PCI_OP_aer_resume           (7)
+#define XEN_PCI_OP_aer_mmio             (8)
+#define XEN_PCI_OP_aer_slotreset        (9)
+
+/* xen_pci_op error numbers */
+#define XEN_PCI_ERR_success             (0)
+#define XEN_PCI_ERR_dev_not_found       (-1)
+#define XEN_PCI_ERR_invalid_offset      (-2)
+#define XEN_PCI_ERR_access_denied       (-3)
+#define XEN_PCI_ERR_not_implemented     (-4)
+/* XEN_PCI_ERR_op_failed - backend failed to complete the operation */
+#define XEN_PCI_ERR_op_failed           (-5)
+
+/*
+ * it should be PAGE_SIZE-sizeof(struct xen_pci_op))/sizeof(struct msix_entry))
+ * Should not exceed 128
+ */
+#define SH_INFO_MAX_VEC                 128
+
+struct xen_msix_entry {
+        uint16_t vector;
+        uint16_t entry;
+};
+struct xen_pci_op {
+        /* IN: what action to perform: XEN_PCI_OP_* */
+        uint32_t cmd;
+
+        /* OUT: will contain an error number (if any) from errno.h */
+        int32_t err;
+
+        /* IN: which device to touch */
+        uint32_t domain; /* PCI Domain/Segment */
+        uint32_t bus;
+        uint32_t devfn;
+
+        /* IN: which configuration registers to touch */
+        int32_t offset;
+        int32_t size;
+
+        /* IN/OUT: Contains the result after a READ or the value to WRITE */
+        uint32_t value;
+        /* IN: Contains extra infor for this operation */
+        uint32_t info;
+        /*IN:  param for msi-x */
+        struct xen_msix_entry msix_entries[SH_INFO_MAX_VEC];
+};
+
+/*used for pcie aer handling*/
+struct xen_pcie_aer_op {
+        /* IN: what action to perform: XEN_PCI_OP_* */
+        uint32_t cmd;
+        /*IN/OUT: return aer_op result or carry error_detected state as input*/
+        int32_t err;
+
+        /* IN: which device to touch */
+        uint32_t domain; /* PCI Domain/Segment*/
+        uint32_t bus;
+        uint32_t devfn;
+};
+struct xen_pci_sharedinfo {
+        /* flags - XEN_PCIF_* */
+        uint32_t flags;
+        struct xen_pci_op op;
+        struct xen_pcie_aer_op aer_op;
+};
+
+#endif /* __XEN_PCI_COMMON_H__ */
diff --git a/include/xen/interface/io/xenbus.h b/include/xen/interface/io/xenbus.h
index 46508c7fa399..9fda532973a5 100644
--- a/include/xen/interface/io/xenbus.h
+++ b/include/xen/interface/io/xenbus.h
@@ -27,8 +27,14 @@ enum xenbus_state
         XenbusStateClosing      = 5,  /* The device is being closed
                                          due to an error or an unplug
                                          event. */
-        XenbusStateClosed       = 6
+        XenbusStateClosed       = 6,
 
+        /*
+        * Reconfiguring: The device is being reconfigured.
+        */
+        XenbusStateReconfiguring = 7,
+
+        XenbusStateReconfigured  = 8
 };
 
 #endif /* _XEN_PUBLIC_IO_XENBUS_H */
diff --git a/include/xen/interface/physdev.h b/include/xen/interface/physdev.h
index cd6939147cb6..2b2c66c3df00 100644
--- a/include/xen/interface/physdev.h
+++ b/include/xen/interface/physdev.h
@@ -106,6 +106,57 @@ struct physdev_irq {
         uint32_t vector;
 };
 
+#define MAP_PIRQ_TYPE_MSI               0x0
+#define MAP_PIRQ_TYPE_GSI               0x1
+#define MAP_PIRQ_TYPE_UNKNOWN           0x2
+
+#define PHYSDEVOP_map_pirq              13
+struct physdev_map_pirq {
+    domid_t domid;
+    /* IN */
+    int type;
+    /* IN */
+    int index;
+    /* IN or OUT */
+    int pirq;
+    /* IN */
+    int bus;
+    /* IN */
+    int devfn;
+    /* IN */
+    int entry_nr;
+    /* IN */
+    uint64_t table_base;
+};
+
+#define PHYSDEVOP_unmap_pirq            14
+struct physdev_unmap_pirq {
+    domid_t domid;
+    /* IN */
+    int pirq;
+};
+
+#define PHYSDEVOP_manage_pci_add        15
+#define PHYSDEVOP_manage_pci_remove     16
+struct physdev_manage_pci {
+        /* IN */
+        uint8_t bus;
+        uint8_t devfn;
+};
+
+#define PHYSDEVOP_manage_pci_add_ext    20
+struct physdev_manage_pci_ext {
+        /* IN */
+        uint8_t bus;
+        uint8_t devfn;
+        unsigned is_extfn;
+        unsigned is_virtfn;
+        struct {
+                uint8_t bus;
+                uint8_t devfn;
+        } physfn;
+};
+
 /*
  * Argument to physdev_op_compat() hypercall. Superceded by new physdev_op()
  * hypercall since 0x00030202.
@@ -121,6 +172,22 @@ struct physdev_op {
         } u;
 };
 
+#define PHYSDEVOP_setup_gsi    21
+struct physdev_setup_gsi {
+    int gsi;
+    /* IN */
+    uint8_t triggering;
+    /* IN */
+    uint8_t polarity;
+    /* IN */
+};
+
+#define PHYSDEVOP_get_nr_pirqs    22
+struct physdev_nr_pirqs {
+    /* OUT */
+    uint32_t nr_pirqs;
+};
+
 /*
  * Notify that some PIRQ-bound event channels have been unmasked.
  * ** This command is obsolete since interface version 0x00030202 and is **